The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 02, 2020

Filed:

Apr. 08, 2019
Applicant:

Rambus Inc., Sunnyvale, CA (US);

Inventors:

Frederick A. Ware, Los Altos Hills, CA (US);

Richard E. Perego, Thornton, CO (US);

Craig E. Hampel, Los Altos, CA (US);

Assignee:

Rambus Inc., Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H04L 1/24 (2006.01); H04L 7/10 (2006.01); H04L 25/02 (2006.01); H04L 25/12 (2006.01); G11C 29/02 (2006.01); G11C 7/10 (2006.01); H04L 27/00 (2006.01); G11C 7/04 (2006.01); H04L 7/033 (2006.01);
U.S. Cl.
CPC ...
H04L 1/242 (2013.01); G11C 7/1057 (2013.01); G11C 7/1084 (2013.01); G11C 29/022 (2013.01); G11C 29/025 (2013.01); G11C 29/028 (2013.01); H04L 7/0016 (2013.01); H04L 7/0087 (2013.01); H04L 7/0091 (2013.01); H04L 7/10 (2013.01); H04L 25/0292 (2013.01); H04L 25/12 (2013.01); H04L 27/00 (2013.01); G11C 7/04 (2013.01); G11C 2207/2254 (2013.01); H04L 7/033 (2013.01);
Abstract

A method and system provides for execution of calibration cycles from time to time during normal operation of the communication channel. A calibration cycle includes de-coupling the normal data source from the transmitter and supplying a calibration pattern in its place. The calibration pattern is received from the communication link using the receiver on the second component. A calibrated value of a parameter of the communication channel is determined in response to the received calibration pattern. The steps involved in calibration cycles can be reordered to account for utilization patterns of the communication channel. For bidirectional links, calibration cycles are executed which include the step of storing received calibration patterns on the second component, and retransmitting such calibration patterns back to the first component for use in adjusting parameters of the channel at first component.


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